Apparatus for laying concrete floors



May 9, 1933. H. W.'ROOS APPARATUS FOR LAYING CONCRETE FLOORS Filed April 1, 1929 3 Sheets-Sheet 1 Fig. 1

INVENTOR EEenr WRoos 711i SATTORNEY May 9, 1933. H, w, 005 1,907,877

APPARATUS FOR LAYING CONCRETE FLOORS Filed April 1, 1929 3 Sheets-$heet 2 Fig-.8

Fig-10 2 o 8 INVENTOR fiisATToRNEY May 9, 1933. HQ w. R005 APPARATUS FOR LAYING CONCRETE FLOORS Filed April 1, 1929 3 Sheets-Sheet 3 INVENTOR 3 WW his ATTORNEY Patented May 9, 1933 HENRY W. ROOS, 0F CINCINNATI, OHIO ArrARATus FOR LAYING cononn'rnrnoons Application filed' A r l 1,1929. Serial no. 351,532.

This invention relates to apparatus for constructing concrete floors, and the prin-' cipal object of the invention is'the provision of novel-apparatus of this kind whereby concrete floors may be laidinore quickly and more economically than with apparatus previously employed.

Another object of the invention is to provide an apparatus of this kind with interlocking sliores and pans which Will draw or cam adjacent pans into abutting relation with each other.

A further object of the invention is the provision of shores with means for supporting the pans for the concrete, which means permits the removal of' the pans without the removal of the shores on which the newly laid floor is supported;

Another object" of'the invention is the "provision of a novel pan which is light in weight, to be used for the support of the concrete slab, the pan being simplein construction and which may be readily removed from beneath the newly laid floor.

To these and other ends the invention consists in the construction and arrangements of parts that willappear from the following description when read in conjunction with the accompanying drawings, the

novel features being pointed out in the claims following the specification.

"Inthe drawings:

Figure l is a side elevation of a shore having a shore head and pans supported thereon, constructed according to one embodiment of the inventlon, a portion of the floor appearing in section v p t Figure 2 is an enlargedslde elevation of the shore head anda pan supported ther Figure Qlooking; in the direction of the ar Figure 5 is an enlarged section onthe] line 5-5 of Figure 4 looking in the directionof the arrows;= p

Figure 3 is a sectiononthe line of- [Figure 6 is a side elevation of one of the pans; I

Figure 7 is a section on the line 7- 7 of Figure" 5 looking in the direction of the arrow;

Figures 8, 9 andilOare detail views illus trating the removal of'a pan; V

Figure l1 is aplan view-of a shore head illustrating amoclified form of the apparatus;

Figure 12 is a side view of'the same showing a pan partially in section and the man: ner of supporting it on the shore head;

Figure 13'is a side elevation 'of a shore head illustrating still another embodiment of theinvention, and v Figure 14 is a front elevation of the same, partially in section; i V In laying concrete floors by apparatus previously employed, i't-has-been the prac tice 'to support the pans, panels or boards, or "whatever-is exposed directly to the concrete, on joists'or girders of some kind, and these joists or girders were supported on; shores. By this invention, the pans which are directly exposed to the concrete are supported directly on shores, thereby eliminat-' ing joists and girders and greatly simplifying the'work;

Three 'methods of providing the forms for the floor are illustrated. In one, the shore heads are provided with movable pan supports so constructed as to allow for the removal of the pans without disturbing the shores. In another, the corners of the pans rest directly on the shore heads,interlocking means being provided to main-tainrthe edges of adjacent pans in close contact wi'th each other. 'By this system, the shores must be taken down in order to remove the p,ans,- an operation which" sometimes endangers the green concrete, however-a considerable advance over the old method of joists and panels. By the third method, a slidable PAT-VENT ori ice pan; support is mounted on the shore hadand suitable neans employed for locking-it in operative'positio-n. Four pans areg supe' ported at their corners around thehead-on the support, all of which are released when the support is moved to inoperative position.

The old method of forming floors by the use of girders, joists, etc., to support pans or panels, necessitated the use of a large number and variety of parts and the removal of the shores, to reuse the materials. This method was slow and very expensive, and the present invention, by the use of specially constructed pans and shore heads, provides a simple means for quickly. andaccurately spacing the shores and pans in tilelike fashion and thereby'quickly constructing the forms for a concrete floor. 7

Referring more particularly to the drawings and Figures 1 to- 10, 1 is ashore of usual or preferred construction, and mounted on the shore is a shore head 2 preferably constructed of metal and having. laterally extending flanges or fins 3 arranged about its center at substantially right angles to each other andsecured to the shore by any suitable means, such as bolts, as shown.

At its upper end, the head terminates in a horizontal plate or platform 4. Intermediate their lengths, the flanges 3 are enlarged to form ears 5, and pivotally mounted on each of the cars is a pan support 1n the form of a dog or bracket 6. 'No-rmally .when not in use the pan support assumes the position shown at the right in Figure under the action of the force of gravity. When in use, however, it is raised to the horizontal position, shown at the left of said figure, in which position it may be locked or secured by means of a key or wedge 7, adapted to be inserted through a slot or opening provided therefore in the ear in such position that the dog is supported thereon. The dog or bracket is so constructed that it will be exactly at the right height to receive the pans when the wedge is driven ti ht.

The wedges 7 are preferably secured to the head or pan support by means of a cord or chain 8 as shown, so that they may al-. ways be conveniently ready for use. When inoperative position, the dog or bracket extends substantially horizontally outward from its pivot and at its outer end has two upwardly and outwardly inclined fingers 9 and 10 forming'a substantially V-shaped opening between them. At the base of the fingers,'the dog has a short horizontal'portion 11, and inside this horizontal portion, ithas an inwardly and upwardly inclined portion 12. 7

Each of the shore heads has four of these pan supports equidistantly arranged intermediate its corners, and each of the supports receives two pans, one on each of thefin their corners on each shore head, which forms with them a substantially continuous surface on which the concrete for the floor is spread, as indicated in Figure 1.

The pans 13 may be of any preferred or suitable size or shape, preferably constructed of sheet iron, and are provided with downwardly extending flanges 14: around their outer edges having the horizontal portions 14 extending inwardly beneath the outer edges of the pan, and may be further reinforced by the rods, angles or bars 15 secured to the under surface of the pans by any suitable or preferred means, as by electric or gas welding.

While three of these reinforcing bars are illustrated in the drawings,'it will be understood that a greater or lesser number may be employed without departing from the spirit or scope of the'invention. Each of the cut-out portions of the corners of the pans are provided with brackets or hangers 16 arranged inside the flanges 14 to which they may be secured by any suitable means, as by welding. These brackets are provided with inwardly arranged horizontal flanges 17 restingjagainst the under surface of the pan to which it may be secured by welding ifdesired. I

In using the apparatus, the usual pillars or column heads are set up and the shores arranged in position, and the pan supports locked or fastened in supporting position by means of the wedges. The pans are then dropped in from above, each corner of the pan engaging and resting on one of the shores. It will be noted that this method absolutely overcomes any difficulty in spacing the shores, since any improper spacing is indicated as soon as the vpans engage the shore heads. i

The V-shaped openings in the pan supports are made of proper width to receive two flanges of the corner brackets and space and hold together the edges of adjacent pans in both directions. The parts are so proportioned that the surfaces of the pans all lie in the same plane and in the plane of the platform on the shore head. 'The drop ping. of the flanges 16 into the V-shaped openings formed by the fingers 9'and 10 of the dog or bracket 6 spaces the shores and pans and cams them together, thus making the entire floor form-tight and causing all parts to lie in the same plane. The whole apparatus automatically spaces itself both vertically and horizontally.

When the floor has been poured, it is generally desirable to remove the pans for use in pouring the next floor as soon as possible.

To take down the shores on which the pans laid or green concrete. With the" herein described apparatus it is unnecessary to take downthe-shores to remove the pans,but any pan can be released from its supports independently of all others by removing the wedgesfrom the pan supports at each of its.

means have been provided for forcibly removing the pans from the concrete.

To thisend, the flanges 14 on each side of the pans are provided with slots or openings 18 and 1 9, one adjacent each end of the flange near the corner brackets, the openings 18 and-19being spaced the same distances from the corners of the pans so that the openings of adjacent pans will have the same vertical alinement. Horizontally, the slots 19- are lower than the slots 18, so that they are offset with reference to each other on adjacent pans. By alternating the slots 18 and 19 around the pans, the slots 19 of one pan will always come adjacent and in verti cal alinement with slots 18 of adjacent'pans,

and itsslots 18 will come adjacent and in vertical alinement with slots 19 of the ad acent pans. The removal of a pan, after the corner supports have been released, is illustrated in Figures 5, 7, 8 and 9 of the draw- T igure' shows the positionof the pan just after the supports have been released. In this position, a tool in the form of a wedge may be inserted through the registering portions of the slots 18 and 19 and forced inwardly until the released pan is moved to the Figure 8 position. It will be understood that each corner of the pan may be'simultaneously operated upon in the same manner. When the Figure 8 position is reached, the slots are in both horizontal and vertical alinement, but the slots 19 of the pan being operated on have moved to the Figure- 10 position and project below the flanges of the adjacent pans. The wedges arenow removed from the original set of openings and inserted in the adjacent slots 19'where they engage the bottom of-the slots and the flanges of the adjacent pans.

By driving the wedges to their limits, the pan ismov-ed to the position of Figure 9, in which the slots 18 of the pan operated on project below-the flanges of the adjacent pans; The wedgesare again removed from the slots 19 and reinserted in the slots 18,. and the pan again moved downwardly until:

it nearly reaches the bottom of the adjacent flanges, from which position it is readily removed. The remaining pans may bei rer moved in the same manner, although they are not'wedged in. so tightlysince they. have an opportunity to expand after one ofthe pans is removed. j i Referring now tothe modified formillustrated in Figures 11 and 12 of the drawings,

30 is a shore head preferably constructed ofmetal and adapted to be secured to the top of a shore 31 of usual or preferred construction, by any suitable means as by bolts, as shown. e

The top of the head 30 is provided with grooves or channels 32 arranged substantiah ly at right angles to each other and meeting at the center of" the head.= The walls of these grooves incline inwardly and downwardly from the top of the head and terminate in a bottom wall 33, so that the grooves are wider at the top or mouth than at the bottom. "The bottom walls of these grooves all lie insub stantially the same plane which is substanaf tially parallel with the plane of=the topofthe head. Y j

The pans 34 to be supported in thisshore head may be constructedas previously described, are substantially rectangular-yin form, andhave depending flanges about their outer edges secured thereto by welding or other suitable means. The'faces of these flanges are arranged at" substantially right angles to the surfaceof' the pan, and the flanges are guided into place by the'in'clination of the side walls of the grooves'32.

In laying the pans, each is supported on four heads, one head being arranged at' each corneriand'the flanges at the corners are in-* serted in the grooves 32. The corners of four pans meet at substantially the center with each other to form a continuous plane for the floors surface on which the concrete is spread.

It will be noted'that when one pan is posi tioned on the shores the adjacent shores are 1 locatedand the adjacent pans are automatically cammed into close contact with each other. It will also be noted that with this head,the pans cannotbe removed until the a 12 In the form of the invention illustrated in shores are taken down.

Figures 13 and"1 4;, a shore head, preferably constructed of metal, is mounted on a shore 40 by means of a bracket'tl. Thisbracket is preferably constructed of metal and: se-

cured to the shore by any suitable means, as by bolts. This bracket has an :L-shaped socket formed of parallel flanges 42 in which a riser or post 43 is supportedin vertical cured to the riser by means of bolts or other preferred means.

Slidably mounted on the post 43 is a pan support 46, having an L-shaped central opening through which the post extends. This pan support is preferably square in form and may be constructed of metal in a single piece, preferably by casting.

The outer walls 47 ofthe pan support incline inwardly and downwardly, and inter- BOY mediate the ends of each side there is formed a V-shaped opening 48. Each corner of the support is adapted to carry one, corner of one of the pans 13, the corner flange being received in the adjacent openings 48, the inclined walls of which serve to cam or wedge the adjacent pans into close contact with each other and with the platform at the top of the shore to form a close and continuous surface. Means are provided for looking or securing the pan support in the elevated operative position shown in the drawings, said means comprising, in the present instance, a wedgeshaped support 49 adapted to be inserted in a slot or opening providedtherefor in the post 43. The parts are so proportioned that when the wedge is driven in to the limit of its movement, the surfaces of the pans will lie in substantially the same plane with the surface of the plat.- form 44. When the wedge is removed the support is permitted to move downwardly on the post. If desired, the wedges may be attached to the heads by the chains 49 for convenience.

It will be understood that four pans engage each of the pan supports, and that in setting up the forms, when the first shore is properly located, the proper spacing of the adjacent shores is indicated by the engagement of the pans therewith. lVhen the concrete has been poured, the supports'may be released from under the pansand the pans removed without disturbing the shores on which the concrete is supported, as in the first form described above.

While only three particular embodiments of the invention have been described herein, it is not confined to the particular structure shown and described, but this application is intended to cover such changes or departures as may come within the intent of the improvements or the scope of the following claims.

I claim:

1. An apparatus for laying concrete floors, comprising a shore head having. a: plurality of flanges arranged radially to each other in planes intersecting each other centrally of the head, and a pan support pivotally mounted. on each of said flanges.

2. An apparatus for la ing concrete floors,

comprising a plurality o shores,a plurality of pans substantially rectangular in form and adapted to be releasably supported on the shores to form a substantially continuous plane surface therewith, depending flanges on the outer edges of the pans having openings offset but registering with similar openings in the flanges of adjacent pans whereby a pan released from its supports may be removed while the adjacent pans are supported in normal position.

3. An apparatus for laying concrete floors comprising a shorev having a substantially rectangular top, means for supporting a plurality of pans on said shore each in en gagement with two sides of said top, said means being movable to disengage one ofv said pans independently of the others.

4. An apparatus for laying concrete floors comprising a shore having a substantially rectangular top, a plurality of pan supports movfahly mounted on said shore and arranged to correspond to the sides of said top and'each adapted to engage a pair of adjacent pans, and separate means for releasablyretaining each of said supports inoperative position. i

5. An apparatus for layingconcrete floors.

comprising a shore having a substantially rectangular plane surface at its upper extremity, apan support movable on the shore to and from an operative position, means on sa1d support for engaging a plurality of pans and supporting them in engagement with three ad acent sldes of said upper eX- tremity, a second pan support. movable on sa1d shore to and from an operative position, means on said second support for en-' gaging a plurality of other pans and supporting them in engagement with the remaining side of said upper extremity, and separately releasable means for retaining said supports in operative position.

6. Apparatus for laying concrete floorscomprising a shore having a substantially rectangular top arranged in a horizontal plane, a pan supporting bracket pivoted on said shore to move to and from operative position thereon, means on said bracket for.

camming a pair of pans in one direction into engagement with a side of said rectangular top, other means on sa1d bracket for cam-.

ming said pans into engagement with the adjacent sides of said top, and means for retaining said bracket in operative position.

7 An apparatus for laying concrete floors comprising a shore having a substantially rectangular top arranged in a horizontal plane, flanges arranged substantially perpendicular to each other extending downwardly from said top and corresponding to the sides of said top, a pan engaging bracketpivoted on each of said flanges, means on each of said brackets for engaging a pair of pans and camming them in two directions toward and into engagement with said top, and means for retaining said brackets in operative position.

8. An apparatus for laying concrete floors comprising a plurality of shores, a plurality of pans detachably supported thereon, means on said shores for eamming the adjacent pans into close engagement with each other and with the shores to form a substantially continuous plane surface, and de pending flanges on the outer edges of the pans, said flanges on adjacent pans being arranged in close contact with each other and provided with cooperating means whereby a detached pan may be ejected from between the flanges of adjacent pans.

9. An apparatus for laying concrete floors comprising a shore head having a plurality of flanges thereon arranged in substantially vertical planes, a pan support pivotally mounted on each of said flanges and each arranged to swing from a substantially horizontal pan engaging position to a substantially vertical inoperative position, and releasable means cooperating with said flanges for retaining said pan supports in operative position.

10. An apparatus for laying concrete floors comprising a shore having a horizontal top, a pan support pivoted on the shore and movable from an operative position substantially parallel with the plane of said top and projecting outwardly therefrom, downwardly and inwardly to an inoperative position beneath the top, and releasable means for retaining said pan support in operative position.

In witness whereof, I have hereunto signed my name.

HENRY W. ROOS. 

